During the reign of Peroz, the Mihran family enjoyed a high status, and played an important role in Sasanian politics.
[1] In 475, the Mamikonian princess Shushanik was murdered by her husband Prince Varsken, who was a convert to Zoroastrianism, and related to the Mihran family.
Vahan fled with the remnants of the Armenian army into the mountains, where he led guerrilla actions against the Sasanians, while Shapur managed to regain control of Armenia.
In the spring of 484, however, Shapur Mihran returned as the head of a new army and forced Vahan to flee to refuge near the Byzantine frontier, at Tao and Taron.
[3] During the same period, several of Shapur's relatives, including his father Mihran,[4] were summoned by Peroz to aid him in his campaigns against in Central Asia against the Hephthalites.
After hearing about the death of Peroz I, Shapur left Caucasus and returned to Ctesiphon, in order to protect the Sasanian Empire from the Hephthalites and to elect a new king.